Hilary Duff proves she knows the art of dressing down, by teaming her scrapped back hair do with a flawless complexion and simple accessories. Splash snapped the stunning actress as she arrived to co-host the launch of celebrity designed holiday merchandise benefiting "Stand Up To Cancer", with Mandy Moore, Matthew Rhys and Dave Annable. It was held at the Kitson Studio on North Robertson Boulevard, in Los Angeles.